The photic sneeze reflex, or ACHOO (Autosomal Dominant Compelling Helio-Ophthalmic Outburst Syndrome) is a condition that occurs in up to 35% of the human population who have difficulty controlling sneezing when stepping into sunlight. In this case, the sunlight is the stimulus and the response is uncontrollable sneezing. Need help

A true

B false

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What goes in and out of a cell respiration?

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?